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Polyacrylic ester coating adhesive emulsion and preparation method thereof

A technology of polyacrylate and alkyl acrylate, applied in the field of polyacrylate coating latex and its preparation, can solve the problems of poor coating adhesion, high cost of raw materials, poor cost performance, etc., and achieves low cost and easy reaction. Control, cost-effective effects

Inactive Publication Date: 2010-10-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, some water-based acrylate coating emulsions have been developed in China. The main composition is butyl acrylate as the main monomer, and ordinary methacrylic compounds are functional monomers; although this type of water-based acrylate coating emulsion is environmentally friendly Meets the requirements, but the coating has poor adhesion and low water pressure resistance
[0003] In addition, the existing water-based polyurethane emulsion is mainly made by reacting polyether polyol (or polyester polyol) with isocyanate, chain extender dimethylol propionic acid and other raw materials. The cost of raw materials is much higher than that of water-based acrylate, and the cost performance is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In a reaction kettle with a stirrer, reflux condenser and thermometer, first add 15.0 kg of deionized water, then add 0.3 kg of ethoxylated alkyl ether ammonium sulfate (CO-436, produced by Shanghai Zhongcheng Chemical Company), formazan 1.3 kg of sodium propylene sulfonate, 0.83 kg of methacrylic acid, 1.31 kg of urea heterocyclic compounds containing double bonds (V-100M, produced by Shanghai Zhongcheng Chemical Company) and internal crosslinking monomer diallyl phthalate 0.2 kg of ester, stir and mix evenly, add 20.0 kg of butyl acrylate, 3.5 kg of methyl methacrylate and 3.5 kg of styrene, emulsify for 1 hour and discharge as a pre-emulsion.

[0043] Add 15.0 kg of deionized water and 1.6 kg of the above-mentioned pre-emulsion into the empty kettle as the seed liquid, raise the temperature to 80 ° C, add 32 g of ammonium persulfate and 28 g of sodium bisulfite, and react for 15 minutes until there is no reflux, then slowly Add the rest of the above-mentioned pre-emu...

Embodiment 2

[0046]In a reaction kettle with a stirrer, reflux condenser and thermometer, first add 15.0 kg of deionized water, then add 0.3 kg of ethoxylated alkyl ether ammonium sulfate (CO-436, produced by Shanghai Zhongcheng Chemical Company), formazan 1.3 kg of sodium propylene sulfonate, 0.83 kg of methacrylic acid, 1.5 kg of urea heterocyclic compounds containing double bonds (V-100M, produced by Shanghai Zhongcheng Chemical Company) and internal crosslinking monomer diallyl phthalate 0.3 kg of ester, stir and mix evenly, add 20.0 kg of butyl acrylate, 3.5 kg of methyl methacrylate and 3.5 kg of styrene, emulsify for 1 hour and discharge as a pre-emulsion.

[0047] Add 15.0 kg of deionized water and 1.6 kg of the above-mentioned pre-emulsion into the empty kettle as the seed liquid, raise the temperature to 80 ° C, add 32 g of ammonium persulfate and 28 g of sodium bisulfite, and react for 15 minutes until there is no reflux, then slowly Add the rest of the above-mentioned pre-emuls...

Embodiment 3

[0050] In the reactor with stirrer, reflux condenser and thermometer, first add 15.0 kg of deionized water, then add 0.3 kg of ethoxylated alkyl ether ammonium sulfate (CO-436, produced by Shanghai Zhongcheng Chemical Company), containing Allyl alkyl sulfosuccinic acid diester sodium salt (M-10S, produced by Shanghai Zhongcheng Chemical Company) 1.3 kg, methacrylic acid 0.83 kg, diacetone acrylamide 1.5 kg and internal crosslinking monomer phthalic acid 0.2 kg of diallyl ester, stir and mix evenly, add 20.0 kg of butyl acrylate, 3.5 kg of methyl methacrylate and 3.5 kg of styrene, emulsify for 1 hour and discharge as a pre-emulsion.

[0051] Add 15.0 kg of deionized water and 1.6 kg of the above-mentioned pre-emulsion into the empty kettle as the seed liquid, raise the temperature to 80 ° C, add 32 g of ammonium persulfate and 28 g of sodium bisulfite, and react for 15 minutes until there is no reflux, then slowly Add the rest of the above-mentioned pre-emulsion dropwise, and ...

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Abstract

The invention discloses a polyacrylic ester coating adhesive emulsion, which is prepared from the following raw materials by weight percent: 20-50% of soft monomer, 5-20% of hard monomer, 0.5-2.0% of monomer containing carboxyl group, 1-5% of crosslinking monomer, 1-5% of emulsifier, 0.2-0.7% of initiator and the balance of deionized water, wherein the soft monomer is crylic acid alkyl ester; the hard monomer is one or two of methylpropenoic acid alkyl ester and styrene; the monomer containing carboxyl group is one or more of methacrylic acid, itaconic acid and maleic acid; and the corsslinking monomer is one or two of non-formaldehyde crosslinking monomer and inner crosslinking monomer containing two or more double bonds. The emulsion has good safety, no toxicity, low cost, high hydraulic pressure resistance, wide application range and the content of the formaldehyde of the coating accords with the European Union exit criteria. The invention also discloses a preparation method of the polyacrylic ester coating adhesive emulsion, which is simple to operate and is suitable for industrialized production.

Description

technical field [0001] The invention relates to the field of textile fine chemicals, in particular to a polyacrylate coating latex and a preparation method thereof. Background technique [0002] The environmentally friendly high water pressure resistant polyacrylate coating latex is a polymer copolymer mainly composed of acrylate, which can be widely used in textile coatings that require high water pressure resistance and strict control of formaldehyde content. The early coating adhesives were solvent-based acrylate copolymers, which used benzene compounds as solvents, which were highly toxic, flammable, costly, and not environmentally friendly. Later, it gradually developed into a water-based acrylate copolymer emulsion, but its cross-linking agent is mostly N-methylol acrylamide, which will produce formaldehyde substances during the cross-linking process, resulting in the formation of formaldehyde in the prepared acrylate copolymer emulsion. The content is relatively high...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/58D06M15/263
Inventor 方仕江张大华
Owner ZHEJIANG UNIV
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